742791816 has 64 divisors (see below), whose sum is σ = 2222035200. Its totient is φ = 228550464.

The previous prime is 742791811. The next prime is 742791823. The reversal of 742791816 is 618197247.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (742791811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129456 + ... + 135071.

It is an arithmetic number, because the mean of its divisors is an integer number (34719300).

Almost surely, 2^742791816 is an apocalyptic number.

It is an amenable number.

742791816 is an abundant number, since it is smaller than the sum of its proper divisors (1479243384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

742791816 is a wasteful number, since it uses less digits than its factorization.

742791816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264555 (or 264545 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 742791816 is about 27254.2073082304. The cubic root of 742791816 is about 905.6402238009.

The spelling of 742791816 in words is "seven hundred forty-two million, seven hundred ninety-one thousand, eight hundred sixteen".